What are function parameters and arguments in programming?

What are function parameters and arguments in programming?

Function parameters are variables listed as part of a function's definition, while arguments are the actual values passed to those parameters when the function is called.

Can you give me an example of a function with parameters and arguments?

Sure! Here's a simple example in Python:

def greet(name):
    print(f'Hello, {name}!')

# Calling the function with an argument
greet('Alice')

In this case, name is the parameter, and 'Alice' is the argument.

What happens if I don't provide an argument for a parameter?

If a parameter is defined without a default value and you don't provide an argument, you'll get a TypeError indicating that a required positional argument is missing.

Can parameters have default values?

Yes, parameters can have default values. If an argument is not provided, the default value will be used. For example:

def greet(name='Guest'):
    print(f'Hello, {name}!')

Here, if you call greet() without an argument, it will print 'Hello, Guest!'.